GradientCollector (Deep Java Library 0.16.0 API specification)

All Superinterfaces:

java.lang.AutoCloseable
```
public interface GradientCollector
extends java.lang.AutoCloseable
```
An interface that provides a mechanism to collect gradients during training.
The GradientCollector should be opened with a try-with-resources. All operations performed within the try-with-resources are recorded and the variables marked. When backward function is called, gradients are collected w.r.t previously marked variables.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`backward(NDArray target)`	Calculate the gradient w.r.t previously marked variable (head).
`void`	`close()`

- Method Detail
  - backward
```
void backward(NDArray target)
```
    Calculate the gradient w.r.t previously marked variable (head).
    
    Parameters:
    
    target - the target NDArray to calculate the gradient w.r.t head
  - close
```
void close()
```
    Specified by:
    
    close in interface java.lang.AutoCloseable